Open Tender Procedure Within The Community For The "Collective Catering Service" With Reduced Environmental Impact - Pursuant To Art. 57 C.2, 71, 108 And 130 Of The Legislative Decree. 31 March 2023, N.36, Integrating The Environmental Sustainability Criteria With The Application Of The Cam (Ministerial Decree No. 65 Of 10 March 2020) - In The Mandatory Service Canteens For Penitentiary Police Personnel